Briquet and method of producing the same.



UNITED STATES PATENT @FFICE,

LOUIS J. CURTMAN, OF NEW YORK, N. Y.

BRIQUE'I. ANID METHOD OF PRODUCING THE SAME.

No Drawing.

To all whom it may concern:

Be it known that I, Loors J. 'CURTMAN, a citizen of-the United States, residing at the city of New York, borough of Manhattan, in the county and State of New York, have invented certain new and useful Improvements in Briquets and Methods of Produc'ing the Same, of which the follow ng is a full, clear, and exact specification.

My invention relates to improvements in the production of briquets from pulverulent, or granulated material, and the same has for its object, more particularly to provide a briquet consisting essentially of fuel anda binder so combined and treated as to form a body which shall be smokeless, odorless and water-proof, and which will burn without appreciable increase of ash.

Further said invention has for its object to provide a briquet possessing such degree of hardness that it will not crumble or mat under storage conditions, and which will burn without disintegration or losing its form.

' ject to provide a method of producing briquets of the character hereinabove specified which is simple, effective and inexpensive, and which may be carried out by means of apparatus usually employed in the briqueting of fuel and ores.

To the attainment of the aforesaid objects and ends my invention consists in the successive steps hereinafter described and in the article or briquet, resulting in the car-- rying out of said steps.

For the purpose of illustration, I shall describe'my invention as carried out in the production of briquet formed from anthracite coal. It will be understood however, that the invention not limited to use in connection with anthracite coal but is equally applicable to the briqueting of hituminous, culm and breeze, as well as mineral ores.

In the production of briqueting from anthracite coal, the coal dust is preferably first passed through a grinder in order to reduce the coal and lamps therein to a uniform size, and then discharged into a suitable receptacle and mixed with the required amount of binder.

As the binding agent, I preferably employ a composition produced by intimately mixing about ninety (90) parts of crude molasses, technically known a black strap,

Specification of Letters Patent.

Application filed May 20, 1913.

Patented Feb. 29, 1916.

Serial No. 768,697.

about nine (9) parts of highly concentrated and neutralized syrup of sulfite'pitch, ob-

tained by neutralizing With-lime the waste sulfite liquor produced in the manufacture of paper pulp, and about one (1) part of water gas tar. The binder and coal dust are mixed together cold, and when thoroughly mixed are molded in a briquet press. Upon leaying the press, the briquets are 'not hard nor water-proof, and if placed in a fire at this stage of the process they would be far from smokeless.

To render the briquets hard, water-proof, and'smokeless, I then subject the molded mass to a baking action for about one hour. I

at the relatively low temperature, and at the same time the molasses is concentrated and caused to. spread more thoroughly throughout the entire mass and coat each of the particles of coal dust. At the higher temperatures the concentrated molasses un dergoes a chemical change, the net result of which is the production of a coke-like mass" 1 which knits the coal particles into a hard, water-proof body, which will thereafter burn without smoke or odor.

I have found that a binder composed of crude molasses when combined with concentrated. and neutralized syrup of sulfite pitch, and water gas tar, is particularly dcsirable for, and may be used with advantage and economy in binding ores and inferi grades of fuels.

It is to be noted that the specific proportions of the several elements of the binder may be varied within reasonable limits in order to adapt the same to different kinds of ores or fuels, and that the amount of binder required in any instance to produce satisfactory briquets,-will of course depend upon the quantity of water or liquid present in the material to be bonded.

Having thus described my in ntion, what I claim and desire to secure by Letters Patent is:

1. A briquet consisting of granulated fuel combined with a binder composed of molasses, concentrated and neutralized syrup of sulfite pitch, and water gas tar, molded to shape, and baked, substantially as specified.

A briquet consisting of granulated coal combined with-a binder composed of crude molasses concentrated and neutralized syrup of sulfite pitch, 'and'water gas-tar, molded go shape, and bakedsubstantially as specied. 41 A briquet consisting of granulated coal combined witha binder composed of crude molasses ,(about 90 parts), concentrated and neutralized syrup of sulfite pitch. (about 9 parts), and water gas tar (about 1 part) molded to shape, and baked, substantially as specified.

5. The method of forming briquets consisting in combining granulated material with a binder composed essentially of a carbo-hydrate, and water gas tar, molding thesame to shape, and then baking said molded. mass, substantially as specified.

6. The method of forming briquets which consists in combining granulated material with a binder composed essentially of molasses, and water gas tar,'moldmg the same to shape, and then baking said molded mass,

substantially as Specified.

7. The method of forming briquets which consists in combining granulated coal with a binder composed essentially of molasses,

and water gas tar, molding the same to shape, and then bakinglsaid molded mass for about one hour at a gradually increasing temperature. up to 500 degrees Fahr. substantially as specified.

8. The method of forming briquets which consists in combining granulated fuel with .0 Ya binder containing molasses and'water gas perature to convert the binder into a cokc- 1 like mass,-substantially as specified.

Signed at the citv of New York, in the county and State of New York, this 14th day of May, one thousand nine hundred and thirteen.

. LOUIS J. CURTMAN. Witnesses v CONRAD A. Dm'rnmcrr, Josn'rn G.. QUINN," J r; 

